CN217726628U - System for restoring complex contaminated land parcel by combining in-situ leaching and multiphase extraction - Google Patents
System for restoring complex contaminated land parcel by combining in-situ leaching and multiphase extraction Download PDFInfo
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- CN217726628U CN217726628U CN202221571241.8U CN202221571241U CN217726628U CN 217726628 U CN217726628 U CN 217726628U CN 202221571241 U CN202221571241 U CN 202221571241U CN 217726628 U CN217726628 U CN 217726628U
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Abstract
The utility model discloses a system for restoring combined pollution plots is united with heterogeneous extraction to normal position drip washing, include: the eluent injection system comprises a pesticide injection well constructed in a soil pollution area and a pesticide liquid supply mechanism connected with the pesticide injection well and used for injecting eluent into the pesticide injection well; the extraction system comprises an extraction well which is constructed at the side of the injection well and an extraction mechanism which is connected with the extraction well and is used for pumping to the extraction well; the extraction mechanism promotes groundwater flow such that leacheate and migratable species flow with the groundwater towards the extraction well. The eluent injection system and the extraction system are matched to accelerate the transmission speed of gas-liquid substances including eluent and migratory substances, thereby improving the soil remediation effect.
Description
Technical Field
The utility model relates to an underground pollutant handles technical field, especially relates to a system for restoreing combined pollution landmass.
Background
The in-situ leaching technology of the polluted soil is a technology that a leaching agent is injected into the soil through an injection well and the like, the soil is enabled to permeate downwards, a migratory compound is formed through the interaction of the leaching agent and pollutants in the soil, and the eluting agent and the pollutants are collected and treated through an extraction well and the like. The in-situ leaching technology of the polluted soil is one of important heavy metal polluted soil remediation technologies, and has mature and wide application in the remediation of the polluted soil at home and abroad. The method has the advantages of no need of cleaning and transporting polluted soil, suitability for removing various pollutants in aeration zones and saturated zones, aqueous phase liquid pollutants, suitability for combined processes and the like.
Although the pollutants can be thoroughly removed at the initial stage of in-situ leaching and a large amount of pollutants can be taken away, in the later stage, because fine particles in soil are taken away by the leaching solution, a water flow channel can be formed, the leaching solution is caused to form a short circuit, the effect is worse and worse, meanwhile, the injected leaching agent needs to be extracted in the leaching process and is recycled after being processed on the ground, the whole period is longer, the injected leaching agent is combined with heavy metals in the soil along with the flowing direction of water, the whole agent conveying channel is single, the acting range is often fixed, the diffusion of the leaching agent depends on the flowing of underground water, and therefore, the actual diffusion efficiency is not high and the flexibility is poor.
The multiphase extraction technology extracts soil gas, underground water and a floating oil layer in an underground pollution area to the ground through a vacuum extraction means to carry out phase separation and treatment so as to control and repair organic pollutants in the soil and the underground water, is an in-situ repair technology, and has small disturbance on the ground environment. The technology is more suitable for repairing the places with medium to high permeability, has better repairing effect on the non-aqueous phase liquid pollutants with stronger volatility, and is not suitable for the places with poor permeability or larger groundwater level change.
SUMMERY OF THE UTILITY MODEL
To the above technical problems existing in the prior art, the embodiment of the utility model provides a system for restoring combined pollution plots is jointly extracted with heterogeneous to normal position drip washing.
For solving the technical problem, the embodiment of the utility model adopts the following technical scheme:
a system for restoring a composite polluted land parcel by combining in-situ leaching and multiphase extraction comprises:
the eluent injection system comprises a pesticide injection well constructed in a soil pollution area and a pesticide liquid supply mechanism connected with the pesticide injection well and used for injecting eluent into the pesticide injection well;
the extraction system comprises an extraction well and an extraction mechanism, wherein the extraction well is constructed on the side of the injection well, and the extraction mechanism is connected with the extraction well and used for pumping to the extraction well; wherein:
the extraction mechanism promotes groundwater flow such that leacheate and migratable species flow with the groundwater towards the extraction well.
Preferably, a monitoring well is further constructed on the side of the extraction well far away from the medicine injection well.
Preferably, the injection well and the extraction well are arranged in plurality around each other.
Preferably, the first and second liquid crystal display panels are,
the liquid medicine supply mechanism is simultaneously connected with a plurality of liquid medicine injection wells;
the extraction mechanism is simultaneously connected with a plurality of extraction wells.
Preferably, a sealing layer is arranged on the top well wall of the injection well, a sieve tube is arranged in the injection well, and a filter material layer is filled on the periphery of the sieve tube.
Preferably, a sealing layer is arranged on the top well wall of the extraction well, a sieve tube is arranged in the extraction well, and a filter material layer is filled on the periphery of the sieve tube.
Preferably, the injection well and the extraction well both extend below groundwater.
Preferably, the chemical liquid supply mechanism includes:
a medicament barrel for providing an eluent;
a drug injection conduit for connecting the medicament barrel and the drug injection well;
a drug pump for feeding the eluent in the drug barrel into the drug injection well through the drug injection pipeline;
the valve is arranged on the medicine injection pipeline above the medicine injection well; wherein:
the top lateral wall of medicament bucket is provided with the medicine mouth, the medicament bucket is built-in to be equipped with agitating unit.
Preferably, the extraction mechanism comprises:
an extraction pipe, the proximal end of which is connected to the extraction well;
a gas-liquid separation device connected to the distal end of the extraction conduit;
and the vacuum pump is arranged on the extraction pipeline and used for supplying gas-liquid matters in the extraction well to the gas-liquid separation device, and the gas-liquid separation device is used for carrying out gas-liquid separation on the gas-liquid matters.
Preferably, the system further comprises a waste gas treatment system and a waste water treatment system, wherein the waste gas treatment system is connected to the waste gas outlet of the gas-liquid separation device, and the waste water treatment system is connected to the waste water outlet of the gas-liquid separation device.
Compared with the prior art, the beneficial effects of the system for restoring the combined polluted plots by combining in-situ leaching and multiphase extraction provided by the embodiment of the utility model are as follows:
1. the eluent injection system and the extraction system are matched to accelerate the transmission speed of gas-liquid substances including eluent and migratory substances, thereby improving the soil remediation effect.
2. The gas-liquid separation device and the wastewater and wastewater treatment system can separate, treat and recycle the gas-liquid substances lifted above the ground.
Drawings
FIG. 1 is a schematic structural diagram of a system for combined remediation of complex contaminated land by in-situ leaching and multiphase extraction provided by the utility model.
FIG. 2 is a top view of the system for remediating complex contaminated land mass by combining in-situ leaching and multiphase extraction provided by the utility model.
Description of reference numerals: 1-a settling tube; 2-a sieve tube; 3-a filter material layer; 4-ground water level; 5-a soil contaminated area; 6-sealing layer; 7-an extraction well; 8-an extraction pipeline; 9-a flow meter; 10-a vacuum pump; 11-a gas-liquid separation device; 12-exhaust line; 13-an exhaust gas treatment device; 14-a sampling port; 15-an exhaust stack; 16-a waste water line; 17-a water pump; 18-a wastewater treatment plant; 19-a sealing layer; 20-a filter material layer; 21-a monitoring well; 22-a settling tube; 23-a medicine injection well; 24-a sealing layer; 25-a filter material layer; 26-a screen; 27-a settling tube; 28-a medicament pump; 29-a medicament cartridge; 30-a stirrer; 31-a medicine adding port; 32-a flow meter; 33-a valve; 34-a medicine injection pipeline; 35-eluent injection system; 36-a multiphase extraction system; 37-an exhaust gas treatment system; 38-wastewater treatment system.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1 and fig. 2, the embodiment of the utility model discloses a system for restoring complex contaminated plots by combining in-situ leaching and multiphase extraction, which comprises: eluent injection system 35, extraction system 36, monitoring well 21, wastewater treatment system 38, and exhaust treatment system 37.
The eluent injection system 35 includes an injection well 23 and a chemical liquid supply mechanism for injecting an eluent into the injection well 23. The extraction system 36 comprises an extraction well 7 and an extraction mechanism for extracting the gas-liquid in the extraction well 7 to above ground.
The injection well 23, the extraction well 7 and the monitoring well 21 are arranged in the following manner:
the injection wells 23, the extraction wells 7 and the monitoring wells 21 are all constructed in the soil pollution area 5, as shown in fig. 2, the injection wells 23 and the extraction wells 7 are arranged in a plurality to cover the soil pollution area 5 and are arranged in a matrix manner, and the injection wells 23 and the extraction wells 7 are arranged in a staggered manner, so that the extraction wells 7 are arranged in all directions on the periphery of each injection well 23. The monitoring well 21 is located in the outermost region; the bottoms of the injection well 23, the extraction well 7 and the monitoring well 21 are all located below the contaminated ground water level 4.
In the eluent injection system 35, each chemical liquid supply mechanism is connected to a plurality of injection wells 23 to supply the eluent to the plurality of injection wells 23 simultaneously; in the extraction system 36, each extraction mechanism is connected to a plurality of extraction wells 7 to simultaneously pump gas and liquid (including eluents, migrateable compounds produced after treatment of contaminants, contaminated groundwater, exhaust gas, etc.) into the plurality of extraction wells 7.
As shown in fig. 1, the chemical liquid supply mechanism in the eluent injection system 35 includes: a medicament barrel 29, a medicament pump 28, a medicament injection pipe 34, a valve 33 and a flow meter 32. The side wall of the top of the medicament barrel 29 is provided with a medicament adding port 31, a stirrer 30 is arranged in the medicament barrel 29, medicaments are added into the medicament barrel 29 through the medicament adding port 31, and the medicaments are mixed with clean water through the stirrer 30 to obtain the eluting agent. The drug injection pipe 34 is used for connecting the drug injection well 23 and the drug barrel 29, the flow meter 32, the valve 33 and the drug pump 28 are arranged on the drug injection pipe 34, and the drug pump 28 is used for providing power so that the eluent in the drug barrel 29 can be injected into the drug injection well 23 through the drug injection pipe 34. The eluent entering the barrel diffuses radially toward the periphery to remove contaminants from the surrounding soil to produce migratable compounds.
The extraction mechanism in the extraction system 36 includes: a vacuum pump 10, an extraction pipeline 8, a gas-liquid separation device 11 and a flow meter 32. The extraction pipe 8 is connected with the extraction well 7 and the gas-liquid separation device 11, and the vacuum pump 10 and the flow meter 32 are arranged on the extraction pipe 8. The vacuum pump 10 makes the extraction pipe 8 suck the extraction well 7 under negative pressure, which provides flowing power for the eluent diffused from the injection well 23, the migratable compounds generated by removing the pollutants by the eluent, the waste gas and the gas-liquid matters of the polluted underground water, so that the gas-liquid matters are diffused sufficiently and rapidly and enter the extraction well 7, and then enter the gas-liquid separation device 11 through the extraction pipe 8.
The utility model discloses in, through constructing extraction well 7 and implement the suction operation with the help of extraction mechanism around injection well 23, improved the diffusion of the gas-liquid thing including the eluent to can in time effectually extract this gas-liquid thing to ground top and handle.
The structures of the injection well 23, the extraction well 7 and the monitoring well 21 are as follows:
the upper part of the injection well 23 is filled with a sealing layer 24, the middle lower part of the injection well 23 is provided with a screen pipe 26, the periphery of the screen pipe 26 is filled with a filter material layer 25, and the bottom of the injection well 23 is provided with a settling pipe 27. In this way, the eluent entering the injection well 23 can be conveniently permeated and diffused radially to the periphery.
The upper part of the extraction well 7 is filled with a sealing layer 6, the middle lower part of the extraction well 7 is provided with a sieve tube 2, the periphery of the sieve tube 2 is filled with a filter material layer 3, and the bottom of the extraction well 7 is provided with a settling pipe 1. Thus, gas and liquid (including eluent, migratory compounds generated after pollutant treatment, polluted underground water, waste gas and the like) at the periphery of the extraction well 7 can conveniently enter the extraction well 7.
The upper part of the monitoring well 21 is filled with a sealing layer 19, the middle lower part of the monitoring well 21 is provided with a sieve tube, the periphery of the sieve tube is filled with a filter material layer 20, and the bottom of the monitoring well 21 is provided with a settling tube 22. In this manner, fluid from the periphery of the monitoring well 21 is facilitated to enter the monitoring well 21 to monitor the effectiveness of the contaminant treatment.
The waste water treatment system 38 comprises a water suction pump 17 and an exhaust gas treatment device 13; the waste water treatment device 18 is connected to the waste water outlet of the gas-liquid separation device 11 through a waste water pipeline 16, and a water pump 17 is arranged on the waste water pipeline 16; the gas-liquid separator 11 separates the wastewater from the gas-liquid, and the wastewater enters the wastewater treatment device 18 through the wastewater pipeline 16 to be treated under the action of the water pump 17.
The exhaust gas treatment system 37 comprises an exhaust gas treatment device 13 and an exhaust chimney 15 arranged at the tail part of the exhaust gas treatment device 13, wherein the exhaust gas treatment device 13 is connected to an exhaust gas outlet of the gas-liquid separation device 11 through an exhaust gas pipeline 12; the gas-liquid separator 11 separates and treats exhaust gas from gas-liquid, and the exhaust gas is introduced into an exhaust gas treatment device 13 through an exhaust gas line 12 to be treated, and is then discharged through an exhaust stack 15. A sampling port 14 is provided on the exhaust stack 15 to perform quality detection of the exhaust gas discharged by the detection device.
The utility model provides a system's advantage lies in:
1. the cooperation of the eluent injection system and the extraction system 36 can accelerate the transmission speed of gas-liquid substances including eluent and migratory substances, thereby improving the soil remediation effect.
2. The gas-liquid separation device 11 and the wastewater/wastewater treatment system 38 can separate, treat and recycle the gas-liquid substances lifted above the ground.
The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the protection scope of the present invention is defined by the claims. Various modifications and equivalents of the invention which may occur to those skilled in the art and which fall within the spirit and scope of the invention should be considered as falling within the scope of the invention.
Claims (10)
1. A system for restoring a composite polluted land parcel by combining in-situ leaching and multiphase extraction is characterized by comprising the following components:
the eluent injection system comprises a medicine injection well constructed in a soil pollution area and a liquid medicine supply mechanism connected with the medicine injection well and used for injecting eluent into the medicine injection well;
the extraction system comprises an extraction well and an extraction mechanism, wherein the extraction well is constructed on the side of the injection well, and the extraction mechanism is connected with the extraction well and used for pumping to the extraction well; wherein:
the extraction mechanism promotes groundwater flow such that leacheate and migratable species flow with the groundwater towards the extraction well.
2. The system for combined in-situ leaching and multiphase extraction remediation of complex contaminated land as claimed in claim 1, wherein a monitoring well is further constructed on the side of the extraction well away from the injection well.
3. The system for remediating a complex contaminated land mass by combining in-situ leaching and multi-phase extraction as claimed in claim 1, wherein a plurality of the injection wells and the extraction wells are arranged around each other.
4. The system for remediating the complex contaminated land mass by combining in-situ leaching and multi-phase extraction according to claim 3,
the liquid medicine supply mechanism is simultaneously connected with a plurality of liquid medicine injection wells;
the extraction mechanism is simultaneously connected with a plurality of extraction wells.
5. The system for remediating the complex contaminated land parcel by combining in-situ leaching and multiphase extraction as claimed in claim 1, wherein a sealing layer is arranged on the top well wall of the injection well, a sieve tube is arranged in the injection well, and a filter material layer is filled on the periphery of the sieve tube.
6. The system for repairing the composite polluted land block by combining in-situ leaching and multiphase extraction according to claim 1, wherein a sealing layer is arranged on the wall of the top well of the extraction well, a sieve tube is arranged in the extraction well, and a filter material layer is filled on the periphery of the sieve tube.
7. The system for remediating a complex contaminated land parcel combining in situ leaching and multiphase extraction according to claim 1, wherein the injection well and the extraction well both extend below groundwater.
8. The system for restoring the complex contaminated land parcel by combining the in-situ leaching and the multiphase extraction according to claim 1, wherein the liquid medicine supply mechanism comprises:
a medicament barrel for providing an eluent;
a drug injection conduit for connecting the medicament barrel and the drug injection well;
a medicament pump for feeding the eluent in the medicament barrel into the medicament injection well through the medicament injection pipeline;
the valve is arranged on the medicine injection pipeline above the medicine injection well; wherein:
the top lateral wall of medicament bucket is provided with the medicine mouth, the medicament bucket is built-in to be equipped with agitating unit.
9. The system for remediating a complex contaminated land mass by combining in-situ leaching and multi-phase extraction as claimed in claim 1, wherein the extraction mechanism comprises:
an extraction pipe, the proximal end of which is connected to the extraction well;
a gas-liquid separation device connected to the distal end of the extraction conduit;
and the vacuum pump is arranged on the extraction pipeline and used for supplying gas-liquid matters in the extraction well to the gas-liquid separation device, and the gas-liquid separation device is used for carrying out gas-liquid separation on the gas-liquid matters.
10. The system for remediating a complex contaminated land parcel combining in-situ leaching and multi-phase extraction as claimed in claim 9, further comprising a waste gas treatment system and a wastewater treatment system, wherein the waste gas treatment system is connected to the waste gas outlet of the gas-liquid separation device, and the wastewater treatment system is connected to the wastewater outlet of the gas-liquid separation device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221571241.8U CN217726628U (en) | 2022-06-22 | 2022-06-22 | System for restoring complex contaminated land parcel by combining in-situ leaching and multiphase extraction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221571241.8U CN217726628U (en) | 2022-06-22 | 2022-06-22 | System for restoring complex contaminated land parcel by combining in-situ leaching and multiphase extraction |
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| CN217726628U true CN217726628U (en) | 2022-11-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115971231A (en) * | 2023-03-20 | 2023-04-18 | 宝航环境修复有限公司 | In-situ leaching system for synchronously repairing aeration zone and aquifer contaminated soil |
-
2022
- 2022-06-22 CN CN202221571241.8U patent/CN217726628U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115971231A (en) * | 2023-03-20 | 2023-04-18 | 宝航环境修复有限公司 | In-situ leaching system for synchronously repairing aeration zone and aquifer contaminated soil |
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